<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head th:fragment="base">
    <meta charset="UTF-8">
    <link rel="stylesheet"  th:href="@{/css/bootstrap-theme.css}"  />
    <link rel="stylesheet"  th:href="@{/css/bootstrap-theme.min.css}"/>
    <link rel="stylesheet"  th:href="@{/css/bootstrap.css}"  />
    <link rel="stylesheet" th:href="@{/layui/css/layui.css}" />
    <script type="text/javascript" th:src="@{/js/jquery-3.2.1.min.js}" ></script>
    <script type="text/javascript" th:src="@{/js/bootstrap.js}"></script>
    <script type="text/javascript" th:src="@{/js/bootstrap.min.js}"></script>
    <script type="text/javascript" th:src="@{/layui/layui.js}" ></script>
</head>

</html>